单项选择题

A．150 years ago.
B．60 million years ago.
C．16 million years ago.
D．150 million years ago.
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单项选择题
A．In the 1930’ s.B．In the 1940’s.C．In the 1950’s.D．In the 1960’s.
A．In the 1930’ s.
B．In the 1940’s.
C．In the 1950’s.
D．In the 1960’s.
单项选择题
A．The radio batteries have been replaced.B．The radio is somewhere else.C．They don’t really need to hear the radio.D．They should get a new radio.
A．The radio batteries have been replaced.
B．The radio is somewhere else.
C．They don’t really need to hear the radio.
D．They should get a new radio.
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